Forty-year old clerk Láda (Jirí Sovák) got divorced some time ago and then was married again, to an attractive woman. The young wife cannot keep the house in order but wants to dress up and have an easy-going life. Láda is often broke and has to borrow money. He thus devises a crafty plan to come into money. Taking a few days off in the office, he leaves for a small town. Here, he visits the managers of all the local stores and orders them to hand their sales over at the post office by noon so that the banknotes can be examined, since false one-hundred crown notes have reportedly appeared in the town and its surroundings.